Welding-machine guide



April 28, 1925. 1,535,477

T. H. KANE WELDING MACHINE GUIDE Filed Aug. 15, 1925 2 Sheets-Sheet 1 U: N 3i I A TTOR NE Y.

April 28, 1-925. 7 1,535,477

T. H. KANE WELDING MAGHINEjGUIDE Filed Aug. 15, 1923 2 Sheets-Sheet 2 w INVENTOR.

A TTOR NE Y.

Patented Apr. 28, 1925.

UNITED STATES PATENT OFFICE.

THOMAS H. KANE, OF YOUNGSTOWN, OHIO, ASSIGNOR T0 TRUSCON STEEL COMPANY, OF YOUNGSTOWN, OHIO, A. CORPORATION OF MICHIGAN.

WELDING-MACHINE GUIDE.

Application filed August 15, 1923.

T 0 all whom it may concern:

Be it known that I, THOMAS H. KANE, a citizen of the United States, and residing at Youngstown, in the county of Mahoning and State of Ohio, have invented a new and Improved \Velding-Machi'ne Guide, of which the following is a specification.

This'invention relates to means adapted to be attached to a spot-welding machine for guiding to the electrodes the several parts which are to constitute built-up structural members, particularly the parts of the light I-beams at present being used to a large extent in place of wooden joists and rafters, and the object of this invention is to provide a mechanism of this character which can readily be adjusted for different thicknesses of the parts to be weldedtogether, which shall be positive in its action, which shall have long life, and which can be produced at low cost.

This invention consists, in combination with a pair of rotarydisk-electrodes ofa spot-welding machine, of a guide roller to engage one of the edges of plate which is to form the web of a built up structural beam or joist and the outsides of the lateral flanges of the angle bars to be, secured thereto, and other rollers 'toengage the opposite sides of said flanges of the angle bars, and in connection with the first named roller, hold these angle bars and web plate in proper position to enter between the rotary electrodes of the machine. It further consists in duplicating these rollers and the electrodes so that complete i-bearns may be produced at one pass. It also consists of the details of construction illustrated in the accompanying drawings and particularly pointed out in the claims.

In the drawings, Fig. l is a central vertical longitudinal section of my improved joist-welding machine. elevation thereof.

Similar reference characters referto like parts throughout the several views.

The welding machines 1 and the diskelectrodes .2- forming parts thereof are of well known construction as is also the mechanism to rotate the'disks step-by-step between welds. The details of these devices have therefore been entirely omitted.

The joists to beassembled by spot-welding comprise web plates 3 and angle bars which have flanges i and 5, the flanges 4 being Fig. 2 is an end- Serial No. 657,478.

spot-welded to the web plates and the flanges 5 extending laterally from the webs and having their edges 6 bent substantially parallel to the flanges 4, if desired, to stifien the flanges 5. The distance between the weld-spots which attach the flanges 4 to the webs will be regulated by the mechanism which gives the step-by-step motion to the disk-electrodes 2 which feed the work along. It is to be understood that when these angle bars are to be attached to only one edge of a web, that one machine and its pair of the disk-electrodes 2 may be omitted.

The two machines 1 and their disks 2 may usually be moved toward or from each other on their common foundation. Attached to the ends of. each machine is a transverse guidebracket 10 in which a frame 11 is adjustably mounted, the frame being secured in position by screws or bolts 12. A roller 13 is mounted on the shaft 14E carried by each frame 11 and is so positioned as to bear against theadjacent edge of the web plate 3 and against the inner edges of the flanges 5 of the channel bars.

Attached to the inner sides of the machines are brackets 16 which carry shafts 17 on which the arms 18 are mounted. In the outer ends of these arms are journaled the shafts 19 which carry the rollers 20 at their adjacent ends, the shafts being kept from moving longitudinally in their bearings by these rollers and the collars 22. These collars also permit longitudinal adjustment of the shafts 19. She adjusting screws 23 are mounted in these arms at each side of the shafts l7 and are employed to swing these rollers 20 toward or away from the rollers 13 to take care .of the variations in thickness of the metal of the angle bars. All the rollers at each end of the machine are preferably in the same plane which is at right angles to the flanges 5 of the angle bars.

The disks 2 are rotated step-by-step, and during the periods of rest the welding current passes from one to the other through the flanges 4 and web 8 in the usual man ner. The several members as fed in between the rollers 13 and 20 farthest from disks remain stationary a suflicient time to permit the wel d spot to harden. It will be understood; I ported by. the? nism may all be changed by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim:

1. A guide mechanism for joist-welding machines comprising a pair of rollers to contact with the edges of the plates constituting the Webs of the joists and with the outer sides of the lateral flanges of the angle barsto be attached thereto, and two pairs of rolls to contact with the opposite sides of said flanges.

v 2. A guide mechanism for joist-welding machines comprising a pair of rollers to contact with the edges of the plates constituting the webs of the joists and with the outer sides of the lateral flanges of the angle bars to be attached thereto, and two pairs of rolls to contact with the opposite sides of said flanges, the axes'of all said rollers being in the same plane.

3. A guide mechanism for joist-welding machines comprising a pair of rollers to contact with the edges of the plates constituting the webs of the joists and with the outer sides of the lateral flanges of the angle bars to be attached thereto, and two pairs of rolls to contactwith the opposite sides of said flanges, and an independently adjustable support for each of the rollers.

4. A guide mechanism for a spot-welding machine embodying a pair of intermittently rotating disk-electrodes, a guide bracket attached to each end of the machine, a guide frame adjustably mounted therein, a roller supported by the frame and adapted to contact with the outer surfaces of the lateral flanges of a pair of angle bars, a pair of brackets mounted adjacent each of said guide frames, an arm pivotally mounted on each of said last named brackets, a roller .carried by each arm, and means to adjust the arms, the rollers of each pair on said arms at each end of the machine being in axial alignment.

THOMAS H. KANE' 

